Analysis of Recharge Area Potential of Upper Cisadane Watershed

Abstract

This research is being conducted on Upper Cisadane Watershed, Bogor, West Java Province. The aim of this research is to investigate the recharge area and analyze the recharge potential. The data consisted of infiltration rate, slope, soil type, and existing landuse as land unit approach which is collected by purposive sampling. Beside that, climate data were collected to estimate the evaporation. The analysis of the data use SCS-CN method to assess the volume of surface runoff, Penman-Monteith method to asseess the evaporation, and Water Balance Method to asseess the groundwater as the recharge potention. The recharge area would be classified into several areas into the highest to the lowest recharging area. The result of this study would be the total of groundwater fluxas the recharge potential based on each classified recharge area. The condition ofrecharge area could be one of the reasoning in develeoping the urban water system. The land with the good condition has surplus as ΔS=490,26 mm, and the critical one has deficit as ΔS=(-)543,49. The condition of the highest recharghing area would be analysed as the criteria of potential recharging area and the area should be managed well in the future. The condition of the lowest recharghing area would be restored depend on its problem.